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4 Written questions

3 Multiple choice questions

  1. the homolog has evolved more slowly in mice.
  2. they provide positional information in the embryo
  3. allows us to indirectly date fossils up to billions of years old based on minerals in surrounding volcanic strata

3 True/False questions

  1. Phylogeny is the evolutionary history of related groups of organisms. Organisms are grouped into taxa based on homologous characteristics, shared traits that result from common ancestry. Which statement is true?

    Homologous structures look the same and serve the same function, but they differ in evolutionary origin and structure.
    The term "monophyletic" refers to a taxon that includes an ancestral species and all of its descendants.
    Ancestral traits are always simpler than derived traits.
    they provide positional information in the embryo


  2. If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

    domestic cat


  3. Evolution works by _____.

    "tinkering" with existing structures
    predicting the future
    molding the environment to conform to the organisms living in it
    constantly increasing complexity
    converging on a particular phenotype
    "tinkering" with existing structures


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